365413641221 has 4 divisors (see below), whose sum is σ = 371404028844. Its totient is φ = 359423253600.

The previous prime is 365413641193. The next prime is 365413641227. The reversal of 365413641221 is 122146314563.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 7701993121 + 357711648100 = 87761^2 + 598090^2 .

It is a cyclic number.

It is not a de Polignac number, because 365413641221 - 2¹⁰ = 365413640197 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (365413641227) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2995193720 + ... + 2995193841.

It is an arithmetic number, because the mean of its divisors is an integer number (92851007211).

Almost surely, 2^365413641221 is an apocalyptic number.

It is an amenable number.

365413641221 is a deficient number, since it is larger than the sum of its proper divisors (5990387623).

365413641221 is an equidigital number, since it uses as much as digits as its factorization.

365413641221 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5990387622.

The product of its digits is 103680, while the sum is 38.

Adding to 365413641221 its reverse (122146314563), we get a palindrome (487559955784).

The spelling of 365413641221 in words is "three hundred sixty-five billion, four hundred thirteen million, six hundred forty-one thousand, two hundred twenty-one".